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<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

<body>
    <script>
        //数组解构
        // let arr = [1,2,3];
        // // let a = arr[0];
        // // let b = arr[1];
        // // let c = arr[2];

        // let [a,b,c] = arr;

        // console.log(a,b,c)

        const person = {
            name: "jack",
            age: 21,
            language: ['java', 'js', 'css']
        }

        //         const name = person.name;
        //         const age = person.age;
        //         const language = person.language;

        //对象解构
        const { name: abc, age, language } = person;
        console.log(abc, age, language)

        //4、字符串扩展
        let str = "hello.vue";
        console.log(str.startsWith("hello"));//true
        console.log(str.endsWith(".vue"));//true
        console.log(str.includes("e"));//true
        console.log(str.includes("hello"));//true


        //字符串模板
        let ss = `<div>
                    <span>hello world<span>
                </div>`;
        console.log(ss);

        //  // 2、字符串插入变量和表达式。变量名写在 ${} 中，${} 中可以放入 JavaScript 表达式。
        function fun() {
            return "这是一个函数"
        }
        let info = `我是${abc}，今年${age + 10}了, 我想说： ${fun()}`;
        console.log(info);
    </script>
</body>

</html>